Bash completion script for mix

Bash completion is very handy for cli tools. You can set it up very easily for mix using the following script.

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#!/bin/bash
# `sudo vim /etc/bash_completion.d/mix.sh` and put this inside of it
# mix bash completion script

complete_mix_command() {
  [ -f mix.exs ] || exit 0
  mix help --search "$2"| cut -f1 -d'#' | cut -f2 -d' '
  return $?
}

complete -C complete_mix_command -o default mix
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